4 * linux/include/linux/ide.h
6 * Copyright (C) 1994-2002 Linus Torvalds & authors
9 #include <linux/init.h>
10 #include <linux/ioport.h>
11 #include <linux/ata.h>
12 #include <linux/blkdev.h>
13 #include <linux/proc_fs.h>
14 #include <linux/interrupt.h>
15 #include <linux/bitops.h>
16 #include <linux/bio.h>
17 #include <linux/device.h>
18 #include <linux/pci.h>
19 #include <linux/completion.h>
21 #ifdef CONFIG_BLK_DEV_IDEACPI
22 #include <acpi/acpi.h>
24 #include <asm/byteorder.h>
25 #include <asm/system.h>
27 #include <asm/mutex.h>
29 #if defined(CONFIG_CRIS) || defined(CONFIG_FRV) || defined(CONFIG_MN10300)
30 # define SUPPORT_VLB_SYNC 0
32 # define SUPPORT_VLB_SYNC 1
36 * Probably not wise to fiddle with these
38 #define IDE_DEFAULT_MAX_FAILURES 1
39 #define ERROR_MAX 8 /* Max read/write errors per sector */
40 #define ERROR_RESET 3 /* Reset controller every 4th retry */
41 #define ERROR_RECAL 1 /* Recalibrate every 2nd retry */
43 /* Error codes returned in rq->errors to the higher part of the driver. */
45 IDE_DRV_ERROR_GENERAL
= 101,
46 IDE_DRV_ERROR_FILEMARK
= 102,
47 IDE_DRV_ERROR_EOD
= 103,
51 * Definitions for accessing IDE controller registers
53 #define IDE_NR_PORTS (10)
56 unsigned long data_addr
;
59 unsigned long error_addr
; /* read: error */
60 unsigned long feature_addr
; /* write: feature */
63 unsigned long nsect_addr
;
64 unsigned long lbal_addr
;
65 unsigned long lbam_addr
;
66 unsigned long lbah_addr
;
68 unsigned long device_addr
;
71 unsigned long status_addr
; /* read: status */
72 unsigned long command_addr
; /* write: command */
75 unsigned long ctl_addr
;
77 unsigned long irq_addr
;
80 #define OK_STAT(stat,good,bad) (((stat)&((good)|(bad)))==(good))
82 #define BAD_R_STAT (ATA_BUSY | ATA_ERR)
83 #define BAD_W_STAT (BAD_R_STAT | ATA_DF)
84 #define BAD_STAT (BAD_R_STAT | ATA_DRQ)
85 #define DRIVE_READY (ATA_DRDY | ATA_DSC)
87 #define BAD_CRC (ATA_ABORTED | ATA_ICRC)
89 #define SATA_NR_PORTS (3) /* 16 possible ?? */
91 #define SATA_STATUS_OFFSET (0)
92 #define SATA_ERROR_OFFSET (1)
93 #define SATA_CONTROL_OFFSET (2)
96 * Our Physical Region Descriptor (PRD) table should be large enough
97 * to handle the biggest I/O request we are likely to see. Since requests
98 * can have no more than 256 sectors, and since the typical blocksize is
99 * two or more sectors, we could get by with a limit of 128 entries here for
100 * the usual worst case. Most requests seem to include some contiguous blocks,
101 * further reducing the number of table entries required.
103 * The driver reverts to PIO mode for individual requests that exceed
104 * this limit (possible with 512 byte blocksizes, eg. MSDOS f/s), so handling
105 * 100% of all crazy scenarios here is not necessary.
107 * As it turns out though, we must allocate a full 4KB page for this,
108 * so the two PRD tables (ide0 & ide1) will each get half of that,
109 * allowing each to have about 256 entries (8 bytes each) from this.
112 #define PRD_ENTRIES 256
115 * Some more useful definitions
117 #define PARTN_BITS 6 /* number of minor dev bits for partitions */
118 #define MAX_DRIVES 2 /* per interface; 2 assumed by lots of code */
119 #define SECTOR_SIZE 512
122 * Timeouts for various operations:
125 /* spec allows up to 20ms */
126 WAIT_DRQ
= HZ
/ 10, /* 100ms */
127 /* some laptops are very slow */
128 WAIT_READY
= 5 * HZ
, /* 5s */
129 /* should be less than 3ms (?), if all ATAPI CD is closed at boot */
130 WAIT_PIDENTIFY
= 10 * HZ
, /* 10s */
131 /* worst case when spinning up */
132 WAIT_WORSTCASE
= 30 * HZ
, /* 30s */
133 /* maximum wait for an IRQ to happen */
134 WAIT_CMD
= 10 * HZ
, /* 10s */
135 /* Some drives require a longer IRQ timeout. */
136 WAIT_FLOPPY_CMD
= 50 * HZ
, /* 50s */
138 * Some drives (for example, Seagate STT3401A Travan) require a very
139 * long timeout, because they don't return an interrupt or clear their
140 * BSY bit until after the command completes (even retension commands).
142 WAIT_TAPE_CMD
= 900 * HZ
, /* 900s */
143 /* minimum sleep time */
144 WAIT_MIN_SLEEP
= HZ
/ 50, /* 20ms */
148 * Op codes for special requests to be handled by ide_special_rq().
149 * Values should be in the range of 0x20 to 0x3f.
151 #define REQ_DRIVE_RESET 0x20
152 #define REQ_DEVSET_EXEC 0x21
153 #define REQ_PARK_HEADS 0x22
154 #define REQ_UNPARK_HEADS 0x23
157 * Check for an interrupt and acknowledge the interrupt status
160 typedef int (ide_ack_intr_t
)(struct hwif_s
*);
163 * hwif_chipset_t is used to keep track of the specific hardware
164 * chipset used by each IDE interface, if known.
166 enum { ide_unknown
, ide_generic
, ide_pci
,
167 ide_cmd640
, ide_dtc2278
, ide_ali14xx
,
168 ide_qd65xx
, ide_umc8672
, ide_ht6560b
,
169 ide_4drives
, ide_pmac
, ide_acorn
,
170 ide_au1xxx
, ide_palm3710
173 typedef u8 hwif_chipset_t
;
176 * Structure to hold all information about the location of this port
178 typedef struct hw_regs_s
{
180 struct ide_io_ports io_ports
;
181 unsigned long io_ports_array
[IDE_NR_PORTS
];
184 int irq
; /* our irq number */
185 ide_ack_intr_t
*ack_intr
; /* acknowledge interrupt */
186 hwif_chipset_t chipset
;
187 struct device
*dev
, *parent
;
188 unsigned long config
;
191 static inline void ide_std_init_ports(hw_regs_t
*hw
,
192 unsigned long io_addr
,
193 unsigned long ctl_addr
)
197 for (i
= 0; i
<= 7; i
++)
198 hw
->io_ports_array
[i
] = io_addr
++;
200 hw
->io_ports
.ctl_addr
= ctl_addr
;
206 * Now for the data we need to maintain per-drive: ide_drive_t
209 #define ide_scsi 0x21
210 #define ide_disk 0x20
211 #define ide_optical 0x7
212 #define ide_cdrom 0x5
214 #define ide_floppy 0x0
217 * Special Driver Flags
219 * set_geometry : respecify drive geometry
220 * recalibrate : seek to cyl 0
221 * set_multmode : set multmode count
227 unsigned set_geometry
: 1;
228 unsigned recalibrate
: 1;
229 unsigned set_multmode
: 1;
230 unsigned reserved
: 5;
235 * Status returned from various ide_ functions
238 ide_stopped
, /* no drive operation was started */
239 ide_started
, /* a drive operation was started, handler was set */
243 IDE_TFLAG_LBA48
= (1 << 0),
244 IDE_TFLAG_OUT_HOB_FEATURE
= (1 << 1),
245 IDE_TFLAG_OUT_HOB_NSECT
= (1 << 2),
246 IDE_TFLAG_OUT_HOB_LBAL
= (1 << 3),
247 IDE_TFLAG_OUT_HOB_LBAM
= (1 << 4),
248 IDE_TFLAG_OUT_HOB_LBAH
= (1 << 5),
249 IDE_TFLAG_OUT_HOB
= IDE_TFLAG_OUT_HOB_FEATURE
|
250 IDE_TFLAG_OUT_HOB_NSECT
|
251 IDE_TFLAG_OUT_HOB_LBAL
|
252 IDE_TFLAG_OUT_HOB_LBAM
|
253 IDE_TFLAG_OUT_HOB_LBAH
,
254 IDE_TFLAG_OUT_FEATURE
= (1 << 6),
255 IDE_TFLAG_OUT_NSECT
= (1 << 7),
256 IDE_TFLAG_OUT_LBAL
= (1 << 8),
257 IDE_TFLAG_OUT_LBAM
= (1 << 9),
258 IDE_TFLAG_OUT_LBAH
= (1 << 10),
259 IDE_TFLAG_OUT_TF
= IDE_TFLAG_OUT_FEATURE
|
260 IDE_TFLAG_OUT_NSECT
|
264 IDE_TFLAG_OUT_DEVICE
= (1 << 11),
265 IDE_TFLAG_WRITE
= (1 << 12),
266 IDE_TFLAG_CUSTOM_HANDLER
= (1 << 13),
267 IDE_TFLAG_DMA_PIO_FALLBACK
= (1 << 14),
268 IDE_TFLAG_IN_HOB_FEATURE
= (1 << 15),
269 IDE_TFLAG_IN_HOB_NSECT
= (1 << 16),
270 IDE_TFLAG_IN_HOB_LBAL
= (1 << 17),
271 IDE_TFLAG_IN_HOB_LBAM
= (1 << 18),
272 IDE_TFLAG_IN_HOB_LBAH
= (1 << 19),
273 IDE_TFLAG_IN_HOB_LBA
= IDE_TFLAG_IN_HOB_LBAL
|
274 IDE_TFLAG_IN_HOB_LBAM
|
275 IDE_TFLAG_IN_HOB_LBAH
,
276 IDE_TFLAG_IN_HOB
= IDE_TFLAG_IN_HOB_FEATURE
|
277 IDE_TFLAG_IN_HOB_NSECT
|
278 IDE_TFLAG_IN_HOB_LBA
,
279 IDE_TFLAG_IN_FEATURE
= (1 << 20),
280 IDE_TFLAG_IN_NSECT
= (1 << 21),
281 IDE_TFLAG_IN_LBAL
= (1 << 22),
282 IDE_TFLAG_IN_LBAM
= (1 << 23),
283 IDE_TFLAG_IN_LBAH
= (1 << 24),
284 IDE_TFLAG_IN_LBA
= IDE_TFLAG_IN_LBAL
|
287 IDE_TFLAG_IN_TF
= IDE_TFLAG_IN_NSECT
|
289 IDE_TFLAG_IN_DEVICE
= (1 << 25),
290 IDE_TFLAG_HOB
= IDE_TFLAG_OUT_HOB
|
292 IDE_TFLAG_TF
= IDE_TFLAG_OUT_TF
|
294 IDE_TFLAG_DEVICE
= IDE_TFLAG_OUT_DEVICE
|
296 /* force 16-bit I/O operations */
297 IDE_TFLAG_IO_16BIT
= (1 << 26),
298 /* ide_task_t was allocated using kmalloc() */
299 IDE_TFLAG_DYN
= (1 << 27),
303 IDE_FTFLAG_FLAGGED
= (1 << 0),
304 IDE_FTFLAG_SET_IN_FLAGS
= (1 << 1),
305 IDE_FTFLAG_OUT_DATA
= (1 << 2),
306 IDE_FTFLAG_IN_DATA
= (1 << 3),
309 struct ide_taskfile
{
310 u8 hob_data
; /* 0: high data byte (for TASKFILE IOCTL) */
312 u8 hob_feature
; /* 1-5: additional data to support LBA48 */
318 u8 data
; /* 6: low data byte (for TASKFILE IOCTL) */
321 u8 error
; /* read: error */
322 u8 feature
; /* write: feature */
325 u8 nsect
; /* 8: number of sectors */
326 u8 lbal
; /* 9: LBA low */
327 u8 lbam
; /* 10: LBA mid */
328 u8 lbah
; /* 11: LBA high */
330 u8 device
; /* 12: device select */
333 u8 status
; /* read: status */
334 u8 command
; /* write: command */
338 typedef struct ide_task_s
{
340 struct ide_taskfile tf
;
343 u8 ftf_flags
; /* for TASKFILE ioctl */
346 struct request
*rq
; /* copy of request */
347 void *special
; /* valid_t generally */
350 /* ATAPI packet command flags */
352 /* set when an error is considered normal - no retry (ide-tape) */
353 PC_FLAG_ABORT
= (1 << 0),
354 PC_FLAG_SUPPRESS_ERROR
= (1 << 1),
355 PC_FLAG_WAIT_FOR_DSC
= (1 << 2),
356 PC_FLAG_DMA_OK
= (1 << 3),
357 PC_FLAG_DMA_IN_PROGRESS
= (1 << 4),
358 PC_FLAG_DMA_ERROR
= (1 << 5),
359 PC_FLAG_WRITING
= (1 << 6),
363 * With each packet command, we allocate a buffer of IDE_PC_BUFFER_SIZE bytes.
364 * This is used for several packet commands (not for READ/WRITE commands).
366 #define IDE_PC_BUFFER_SIZE 256
367 #define ATAPI_WAIT_PC (60 * HZ)
369 struct ide_atapi_pc
{
370 /* actual packet bytes */
372 /* incremented on each retry */
376 /* bytes to transfer */
378 /* bytes actually transferred */
383 /* current buffer position */
386 /* missing/available data on the current buffer */
389 /* the corresponding request */
395 * those are more or less driver-specific and some of them are subject
396 * to change/removal later.
398 u8 pc_buf
[IDE_PC_BUFFER_SIZE
];
401 struct idetape_bh
*bh
;
404 struct scatterlist
*sg
;
407 unsigned long timeout
;
413 #ifdef CONFIG_BLK_DEV_IDEACPI
414 struct ide_acpi_drive_link
;
415 struct ide_acpi_hwif_link
;
420 struct ide_disk_ops
{
421 int (*check
)(struct ide_drive_s
*, const char *);
422 int (*get_capacity
)(struct ide_drive_s
*);
423 void (*setup
)(struct ide_drive_s
*);
424 void (*flush
)(struct ide_drive_s
*);
425 int (*init_media
)(struct ide_drive_s
*, struct gendisk
*);
426 int (*set_doorlock
)(struct ide_drive_s
*, struct gendisk
*,
428 ide_startstop_t (*do_request
)(struct ide_drive_s
*, struct request
*,
430 int (*ioctl
)(struct ide_drive_s
*, struct block_device
*,
431 fmode_t
, unsigned int, unsigned long);
434 /* ATAPI device flags */
436 IDE_AFLAG_DRQ_INTERRUPT
= (1 << 0),
439 /* Drive cannot eject the disc. */
440 IDE_AFLAG_NO_EJECT
= (1 << 1),
441 /* Drive is a pre ATAPI 1.2 drive. */
442 IDE_AFLAG_PRE_ATAPI12
= (1 << 2),
443 /* TOC addresses are in BCD. */
444 IDE_AFLAG_TOCADDR_AS_BCD
= (1 << 3),
445 /* TOC track numbers are in BCD. */
446 IDE_AFLAG_TOCTRACKS_AS_BCD
= (1 << 4),
448 * Drive does not provide data in multiples of SECTOR_SIZE
449 * when more than one interrupt is needed.
451 IDE_AFLAG_LIMIT_NFRAMES
= (1 << 5),
452 /* Saved TOC information is current. */
453 IDE_AFLAG_TOC_VALID
= (1 << 6),
454 /* We think that the drive door is locked. */
455 IDE_AFLAG_DOOR_LOCKED
= (1 << 7),
456 /* SET_CD_SPEED command is unsupported. */
457 IDE_AFLAG_NO_SPEED_SELECT
= (1 << 8),
458 IDE_AFLAG_VERTOS_300_SSD
= (1 << 9),
459 IDE_AFLAG_VERTOS_600_ESD
= (1 << 10),
460 IDE_AFLAG_SANYO_3CD
= (1 << 11),
461 IDE_AFLAG_FULL_CAPS_PAGE
= (1 << 12),
462 IDE_AFLAG_PLAY_AUDIO_OK
= (1 << 13),
463 IDE_AFLAG_LE_SPEED_FIELDS
= (1 << 14),
466 /* Avoid commands not supported in Clik drive */
467 IDE_AFLAG_CLIK_DRIVE
= (1 << 15),
468 /* Requires BH algorithm for packets */
469 IDE_AFLAG_ZIP_DRIVE
= (1 << 16),
470 /* Supports format progress report */
471 IDE_AFLAG_SRFP
= (1 << 17),
474 IDE_AFLAG_IGNORE_DSC
= (1 << 18),
475 /* 0 When the tape position is unknown */
476 IDE_AFLAG_ADDRESS_VALID
= (1 << 19),
477 /* Device already opened */
478 IDE_AFLAG_BUSY
= (1 << 20),
479 /* Attempt to auto-detect the current user block size */
480 IDE_AFLAG_DETECT_BS
= (1 << 21),
481 /* Currently on a filemark */
482 IDE_AFLAG_FILEMARK
= (1 << 22),
483 /* 0 = no tape is loaded, so we don't rewind after ejecting */
484 IDE_AFLAG_MEDIUM_PRESENT
= (1 << 23),
486 IDE_AFLAG_NO_AUTOCLOSE
= (1 << 24),
491 /* restore settings after device reset */
492 IDE_DFLAG_KEEP_SETTINGS
= (1 << 0),
493 /* device is using DMA for read/write */
494 IDE_DFLAG_USING_DMA
= (1 << 1),
495 /* okay to unmask other IRQs */
496 IDE_DFLAG_UNMASK
= (1 << 2),
497 /* don't attempt flushes */
498 IDE_DFLAG_NOFLUSH
= (1 << 3),
500 IDE_DFLAG_DSC_OVERLAP
= (1 << 4),
501 /* give potential excess bandwidth */
502 IDE_DFLAG_NICE1
= (1 << 5),
503 /* device is physically present */
504 IDE_DFLAG_PRESENT
= (1 << 6),
505 /* id read from device (synthetic if not set) */
506 IDE_DFLAG_ID_READ
= (1 << 8),
507 IDE_DFLAG_NOPROBE
= (1 << 9),
508 /* need to do check_media_change() */
509 IDE_DFLAG_REMOVABLE
= (1 << 10),
510 /* needed for removable devices */
511 IDE_DFLAG_ATTACH
= (1 << 11),
512 IDE_DFLAG_FORCED_GEOM
= (1 << 12),
513 /* disallow setting unmask bit */
514 IDE_DFLAG_NO_UNMASK
= (1 << 13),
515 /* disallow enabling 32-bit I/O */
516 IDE_DFLAG_NO_IO_32BIT
= (1 << 14),
517 /* for removable only: door lock/unlock works */
518 IDE_DFLAG_DOORLOCKING
= (1 << 15),
520 IDE_DFLAG_NODMA
= (1 << 16),
521 /* powermanagment told us not to do anything, so sleep nicely */
522 IDE_DFLAG_BLOCKED
= (1 << 17),
523 /* sleeping & sleep field valid */
524 IDE_DFLAG_SLEEPING
= (1 << 18),
525 IDE_DFLAG_POST_RESET
= (1 << 19),
526 IDE_DFLAG_UDMA33_WARNED
= (1 << 20),
527 IDE_DFLAG_LBA48
= (1 << 21),
528 /* status of write cache */
529 IDE_DFLAG_WCACHE
= (1 << 22),
530 /* used for ignoring ATA_DF */
531 IDE_DFLAG_NOWERR
= (1 << 23),
532 /* retrying in PIO */
533 IDE_DFLAG_DMA_PIO_RETRY
= (1 << 24),
534 IDE_DFLAG_LBA
= (1 << 25),
535 /* don't unload heads */
536 IDE_DFLAG_NO_UNLOAD
= (1 << 26),
537 /* heads unloaded, please don't reset port */
538 IDE_DFLAG_PARKED
= (1 << 27),
539 IDE_DFLAG_MEDIA_CHANGED
= (1 << 28),
541 IDE_DFLAG_WP
= (1 << 29),
542 IDE_DFLAG_FORMAT_IN_PROGRESS
= (1 << 30),
546 char name
[4]; /* drive name, such as "hda" */
547 char driver_req
[10]; /* requests specific driver */
549 struct request_queue
*queue
; /* request queue */
551 struct request
*rq
; /* current request */
552 void *driver_data
; /* extra driver data */
553 u16
*id
; /* identification info */
554 #ifdef CONFIG_IDE_PROC_FS
555 struct proc_dir_entry
*proc
; /* /proc/ide/ directory entry */
556 const struct ide_proc_devset
*settings
; /* /proc/ide/ drive settings */
558 struct hwif_s
*hwif
; /* actually (ide_hwif_t *) */
560 const struct ide_disk_ops
*disk_ops
;
562 unsigned long dev_flags
;
564 unsigned long sleep
; /* sleep until this time */
565 unsigned long timeout
; /* max time to wait for irq */
567 special_t special
; /* special action flags */
569 u8 select
; /* basic drive/head select reg value */
570 u8 retry_pio
; /* retrying dma capable host in pio */
571 u8 waiting_for_dma
; /* dma currently in progress */
572 u8 dma
; /* atapi dma flag */
574 u8 quirk_list
; /* considered quirky, set for a specific host */
575 u8 init_speed
; /* transfer rate set at boot */
576 u8 current_speed
; /* current transfer rate set */
577 u8 desired_speed
; /* desired transfer rate set */
578 u8 dn
; /* now wide spread use */
579 u8 acoustic
; /* acoustic management */
580 u8 media
; /* disk, cdrom, tape, floppy, ... */
581 u8 ready_stat
; /* min status value for drive ready */
582 u8 mult_count
; /* current multiple sector setting */
583 u8 mult_req
; /* requested multiple sector setting */
584 u8 io_32bit
; /* 0=16-bit, 1=32-bit, 2/3=32bit+sync */
585 u8 bad_wstat
; /* used for ignoring ATA_DF */
586 u8 head
; /* "real" number of heads */
587 u8 sect
; /* "real" sectors per track */
588 u8 bios_head
; /* BIOS/fdisk/LILO number of heads */
589 u8 bios_sect
; /* BIOS/fdisk/LILO sectors per track */
591 /* delay this long before sending packet command */
594 unsigned int bios_cyl
; /* BIOS/fdisk/LILO number of cyls */
595 unsigned int cyl
; /* "real" number of cyls */
596 unsigned int drive_data
; /* used by set_pio_mode/selectproc */
597 unsigned int failures
; /* current failure count */
598 unsigned int max_failures
; /* maximum allowed failure count */
599 u64 probed_capacity
;/* initial reported media capacity (ide-cd only currently) */
601 u64 capacity64
; /* total number of sectors */
603 int lun
; /* logical unit */
604 int crc_count
; /* crc counter to reduce drive speed */
606 unsigned long debug_mask
; /* debugging levels switch */
608 #ifdef CONFIG_BLK_DEV_IDEACPI
609 struct ide_acpi_drive_link
*acpidata
;
611 struct list_head list
;
612 struct device gendev
;
613 struct completion gendev_rel_comp
; /* to deal with device release() */
615 /* current packet command */
616 struct ide_atapi_pc
*pc
;
618 /* last failed packet command */
619 struct ide_atapi_pc
*failed_pc
;
621 /* callback for packet commands */
622 void (*pc_callback
)(struct ide_drive_s
*, int);
624 void (*pc_update_buffers
)(struct ide_drive_s
*, struct ide_atapi_pc
*);
625 int (*pc_io_buffers
)(struct ide_drive_s
*, struct ide_atapi_pc
*,
628 ide_startstop_t (*irq_handler
)(struct ide_drive_s
*);
630 unsigned long atapi_flags
;
632 struct ide_atapi_pc request_sense_pc
;
633 struct request request_sense_rq
;
636 typedef struct ide_drive_s ide_drive_t
;
638 #define to_ide_device(dev) container_of(dev, ide_drive_t, gendev)
640 #define to_ide_drv(obj, cont_type) \
641 container_of(obj, struct cont_type, dev)
643 #define ide_drv_g(disk, cont_type) \
644 container_of((disk)->private_data, struct cont_type, driver)
646 struct ide_port_info
;
649 void (*exec_command
)(struct hwif_s
*, u8
);
650 u8 (*read_status
)(struct hwif_s
*);
651 u8 (*read_altstatus
)(struct hwif_s
*);
653 void (*set_irq
)(struct hwif_s
*, int);
655 void (*tf_load
)(ide_drive_t
*, struct ide_task_s
*);
656 void (*tf_read
)(ide_drive_t
*, struct ide_task_s
*);
658 void (*input_data
)(ide_drive_t
*, struct request
*, void *,
660 void (*output_data
)(ide_drive_t
*, struct request
*, void *,
664 extern const struct ide_tp_ops default_tp_ops
;
667 * struct ide_port_ops - IDE port operations
669 * @init_dev: host specific initialization of a device
670 * @set_pio_mode: routine to program host for PIO mode
671 * @set_dma_mode: routine to program host for DMA mode
672 * @selectproc: tweaks hardware to select drive
673 * @reset_poll: chipset polling based on hba specifics
674 * @pre_reset: chipset specific changes to default for device-hba resets
675 * @resetproc: routine to reset controller after a disk reset
676 * @maskproc: special host masking for drive selection
677 * @quirkproc: check host's drive quirk list
678 * @clear_irq: clear IRQ
680 * @mdma_filter: filter MDMA modes
681 * @udma_filter: filter UDMA modes
683 * @cable_detect: detect cable type
685 struct ide_port_ops
{
686 void (*init_dev
)(ide_drive_t
*);
687 void (*set_pio_mode
)(ide_drive_t
*, const u8
);
688 void (*set_dma_mode
)(ide_drive_t
*, const u8
);
689 void (*selectproc
)(ide_drive_t
*);
690 int (*reset_poll
)(ide_drive_t
*);
691 void (*pre_reset
)(ide_drive_t
*);
692 void (*resetproc
)(ide_drive_t
*);
693 void (*maskproc
)(ide_drive_t
*, int);
694 void (*quirkproc
)(ide_drive_t
*);
695 void (*clear_irq
)(ide_drive_t
*);
697 u8 (*mdma_filter
)(ide_drive_t
*);
698 u8 (*udma_filter
)(ide_drive_t
*);
700 u8 (*cable_detect
)(struct hwif_s
*);
704 void (*dma_host_set
)(struct ide_drive_s
*, int);
705 int (*dma_setup
)(struct ide_drive_s
*);
706 void (*dma_exec_cmd
)(struct ide_drive_s
*, u8
);
707 void (*dma_start
)(struct ide_drive_s
*);
708 int (*dma_end
)(struct ide_drive_s
*);
709 int (*dma_test_irq
)(struct ide_drive_s
*);
710 void (*dma_lost_irq
)(struct ide_drive_s
*);
711 void (*dma_timeout
)(struct ide_drive_s
*);
713 * The following method is optional and only required to be
714 * implemented for the SFF-8038i compatible controllers.
716 u8 (*dma_sff_read_status
)(struct hwif_s
*);
721 typedef struct hwif_s
{
722 struct hwif_s
*mate
; /* other hwif from same PCI chip */
723 struct proc_dir_entry
*proc
; /* /proc/ide/ directory entry */
725 struct ide_host
*host
;
727 char name
[6]; /* name of interface, eg. "ide0" */
729 struct ide_io_ports io_ports
;
731 unsigned long sata_scr
[SATA_NR_PORTS
];
733 ide_drive_t
*devices
[MAX_DRIVES
+ 1];
735 u8 major
; /* our major number */
736 u8 index
; /* 0 for ide0; 1 for ide1; ... */
737 u8 channel
; /* for dual-port chips: 0=primary, 1=secondary */
747 u8 cbl
; /* cable type */
749 hwif_chipset_t chipset
; /* sub-module for tuning.. */
753 ide_ack_intr_t
*ack_intr
;
755 void (*rw_disk
)(ide_drive_t
*, struct request
*);
757 const struct ide_tp_ops
*tp_ops
;
758 const struct ide_port_ops
*port_ops
;
759 const struct ide_dma_ops
*dma_ops
;
761 /* dma physical region descriptor table (cpu view) */
762 unsigned int *dmatable_cpu
;
763 /* dma physical region descriptor table (dma view) */
764 dma_addr_t dmatable_dma
;
766 /* maximum number of PRD table entries */
768 /* PRD entry size in bytes */
771 /* Scatter-gather list used to build the above */
772 struct scatterlist
*sg_table
;
773 int sg_max_nents
; /* Maximum number of entries in it */
774 int sg_nents
; /* Current number of entries in it */
776 int sg_dma_direction
; /* dma transfer direction */
778 struct ide_task_s task
; /* current command */
782 struct scatterlist
*cursg
;
783 unsigned int cursg_ofs
;
785 int rqsize
; /* max sectors per request */
786 int irq
; /* our irq number */
788 unsigned long dma_base
; /* base addr for dma ports */
790 unsigned long config_data
; /* for use by chipset-specific code */
791 unsigned long select_data
; /* for use by chipset-specific code */
793 unsigned long extra_base
; /* extra addr for dma ports */
794 unsigned extra_ports
; /* number of extra dma ports */
796 unsigned present
: 1; /* this interface exists */
797 unsigned busy
: 1; /* serializes devices on a port */
799 struct device gendev
;
800 struct device
*portdev
;
802 struct completion gendev_rel_comp
; /* To deal with device release() */
804 void *hwif_data
; /* extra hwif data */
806 #ifdef CONFIG_BLK_DEV_IDEACPI
807 struct ide_acpi_hwif_link
*acpidata
;
810 /* IRQ handler, if active */
811 ide_startstop_t (*handler
)(ide_drive_t
*);
813 /* BOOL: polling active & poll_timeout field valid */
814 unsigned int polling
: 1;
817 ide_drive_t
*cur_dev
;
819 /* current request */
823 struct timer_list timer
;
824 /* timeout value during long polls */
825 unsigned long poll_timeout
;
826 /* queried upon timeouts */
827 int (*expiry
)(ide_drive_t
*);
833 } ____cacheline_internodealigned_in_smp ide_hwif_t
;
835 #define MAX_HOST_PORTS 4
838 ide_hwif_t
*ports
[MAX_HOST_PORTS
+ 1];
839 unsigned int n_ports
;
840 struct device
*dev
[2];
842 int (*init_chipset
)(struct pci_dev
*);
844 void (*get_lock
)(irq_handler_t
, void *);
845 void (*release_lock
)(void);
847 irq_handler_t irq_handler
;
849 unsigned long host_flags
;
854 ide_hwif_t
*cur_port
; /* for hosts requiring serialization */
856 /* used for hosts requiring serialization */
857 volatile unsigned long host_busy
;
860 #define IDE_HOST_BUSY 0
863 * internal ide interrupt handler type
865 typedef ide_startstop_t (ide_handler_t
)(ide_drive_t
*);
866 typedef int (ide_expiry_t
)(ide_drive_t
*);
868 /* used by ide-cd, ide-floppy, etc. */
869 typedef void (xfer_func_t
)(ide_drive_t
*, struct request
*rq
, void *, unsigned);
871 extern struct mutex ide_setting_mtx
;
874 * configurable drive settings
877 #define DS_SYNC (1 << 0)
880 int (*get
)(ide_drive_t
*);
881 int (*set
)(ide_drive_t
*, int);
885 #define __DEVSET(_flags, _get, _set) { \
891 #define ide_devset_get(name, field) \
892 static int get_##name(ide_drive_t *drive) \
894 return drive->field; \
897 #define ide_devset_set(name, field) \
898 static int set_##name(ide_drive_t *drive, int arg) \
900 drive->field = arg; \
904 #define ide_devset_get_flag(name, flag) \
905 static int get_##name(ide_drive_t *drive) \
907 return !!(drive->dev_flags & flag); \
910 #define ide_devset_set_flag(name, flag) \
911 static int set_##name(ide_drive_t *drive, int arg) \
914 drive->dev_flags |= flag; \
916 drive->dev_flags &= ~flag; \
920 #define __IDE_DEVSET(_name, _flags, _get, _set) \
921 const struct ide_devset ide_devset_##_name = \
922 __DEVSET(_flags, _get, _set)
924 #define IDE_DEVSET(_name, _flags, _get, _set) \
925 static __IDE_DEVSET(_name, _flags, _get, _set)
927 #define ide_devset_rw(_name, _func) \
928 IDE_DEVSET(_name, 0, get_##_func, set_##_func)
930 #define ide_devset_w(_name, _func) \
931 IDE_DEVSET(_name, 0, NULL, set_##_func)
933 #define ide_ext_devset_rw(_name, _func) \
934 __IDE_DEVSET(_name, 0, get_##_func, set_##_func)
936 #define ide_ext_devset_rw_sync(_name, _func) \
937 __IDE_DEVSET(_name, DS_SYNC, get_##_func, set_##_func)
939 #define ide_decl_devset(_name) \
940 extern const struct ide_devset ide_devset_##_name
942 ide_decl_devset(io_32bit
);
943 ide_decl_devset(keepsettings
);
944 ide_decl_devset(pio_mode
);
945 ide_decl_devset(unmaskirq
);
946 ide_decl_devset(using_dma
);
948 #ifdef CONFIG_IDE_PROC_FS
950 * /proc/ide interface
953 #define ide_devset_rw_field(_name, _field) \
954 ide_devset_get(_name, _field); \
955 ide_devset_set(_name, _field); \
956 IDE_DEVSET(_name, DS_SYNC, get_##_name, set_##_name)
958 #define ide_devset_rw_flag(_name, _field) \
959 ide_devset_get_flag(_name, _field); \
960 ide_devset_set_flag(_name, _field); \
961 IDE_DEVSET(_name, DS_SYNC, get_##_name, set_##_name)
963 struct ide_proc_devset
{
965 const struct ide_devset
*setting
;
967 int (*mulf
)(ide_drive_t
*);
968 int (*divf
)(ide_drive_t
*);
971 #define __IDE_PROC_DEVSET(_name, _min, _max, _mulf, _divf) { \
972 .name = __stringify(_name), \
973 .setting = &ide_devset_##_name, \
980 #define IDE_PROC_DEVSET(_name, _min, _max) \
981 __IDE_PROC_DEVSET(_name, _min, _max, NULL, NULL)
986 read_proc_t
*read_proc
;
987 write_proc_t
*write_proc
;
990 void proc_ide_create(void);
991 void proc_ide_destroy(void);
992 void ide_proc_register_port(ide_hwif_t
*);
993 void ide_proc_port_register_devices(ide_hwif_t
*);
994 void ide_proc_unregister_device(ide_drive_t
*);
995 void ide_proc_unregister_port(ide_hwif_t
*);
996 void ide_proc_register_driver(ide_drive_t
*, struct ide_driver
*);
997 void ide_proc_unregister_driver(ide_drive_t
*, struct ide_driver
*);
999 read_proc_t proc_ide_read_capacity
;
1000 read_proc_t proc_ide_read_geometry
;
1003 * Standard exit stuff:
1005 #define PROC_IDE_READ_RETURN(page,start,off,count,eof,len) \
1008 if (len < count) { \
1014 *start = page + off; \
1018 static inline void proc_ide_create(void) { ; }
1019 static inline void proc_ide_destroy(void) { ; }
1020 static inline void ide_proc_register_port(ide_hwif_t
*hwif
) { ; }
1021 static inline void ide_proc_port_register_devices(ide_hwif_t
*hwif
) { ; }
1022 static inline void ide_proc_unregister_device(ide_drive_t
*drive
) { ; }
1023 static inline void ide_proc_unregister_port(ide_hwif_t
*hwif
) { ; }
1024 static inline void ide_proc_register_driver(ide_drive_t
*drive
,
1025 struct ide_driver
*driver
) { ; }
1026 static inline void ide_proc_unregister_driver(ide_drive_t
*drive
,
1027 struct ide_driver
*driver
) { ; }
1028 #define PROC_IDE_READ_RETURN(page,start,off,count,eof,len) return 0;
1032 /* enter/exit functions */
1033 IDE_DBG_FUNC
= (1 << 0),
1034 /* sense key/asc handling */
1035 IDE_DBG_SENSE
= (1 << 1),
1036 /* packet commands handling */
1037 IDE_DBG_PC
= (1 << 2),
1038 /* request handling */
1039 IDE_DBG_RQ
= (1 << 3),
1040 /* driver probing/setup */
1041 IDE_DBG_PROBE
= (1 << 4),
1044 /* DRV_NAME has to be defined in the driver before using the macro below */
1045 #define __ide_debug_log(lvl, fmt, args...) \
1047 if (unlikely(drive->debug_mask & lvl)) \
1048 printk(KERN_INFO DRV_NAME ": %s: " fmt "\n", \
1049 __func__, ## args); \
1053 * Power Management state machine (rq->pm->pm_step).
1055 * For each step, the core calls ide_start_power_step() first.
1057 * - ide_stopped : In this case, the core calls us back again unless
1058 * step have been set to ide_power_state_completed.
1059 * - ide_started : In this case, the channel is left busy until an
1060 * async event (interrupt) occurs.
1061 * Typically, ide_start_power_step() will issue a taskfile request with
1064 * Upon reception of the interrupt, the core will call ide_complete_power_step()
1065 * with the error code if any. This routine should update the step value
1066 * and return. It should not start a new request. The core will call
1067 * ide_start_power_step() for the new step value, unless step have been
1068 * set to IDE_PM_COMPLETED.
1071 IDE_PM_START_SUSPEND
,
1072 IDE_PM_FLUSH_CACHE
= IDE_PM_START_SUSPEND
,
1075 IDE_PM_START_RESUME
,
1076 IDE_PM_RESTORE_PIO
= IDE_PM_START_RESUME
,
1083 int generic_ide_suspend(struct device
*, pm_message_t
);
1084 int generic_ide_resume(struct device
*);
1086 void ide_complete_power_step(ide_drive_t
*, struct request
*);
1087 ide_startstop_t
ide_start_power_step(ide_drive_t
*, struct request
*);
1088 void ide_complete_pm_rq(ide_drive_t
*, struct request
*);
1089 void ide_check_pm_state(ide_drive_t
*, struct request
*);
1092 * Subdrivers support.
1094 * The gendriver.owner field should be set to the module owner of this driver.
1095 * The gendriver.name field should be set to the name of this driver
1098 const char *version
;
1099 ide_startstop_t (*do_request
)(ide_drive_t
*, struct request
*, sector_t
);
1100 struct device_driver gen_driver
;
1101 int (*probe
)(ide_drive_t
*);
1102 void (*remove
)(ide_drive_t
*);
1103 void (*resume
)(ide_drive_t
*);
1104 void (*shutdown
)(ide_drive_t
*);
1105 #ifdef CONFIG_IDE_PROC_FS
1106 ide_proc_entry_t
* (*proc_entries
)(ide_drive_t
*);
1107 const struct ide_proc_devset
* (*proc_devsets
)(ide_drive_t
*);
1111 #define to_ide_driver(drv) container_of(drv, struct ide_driver, gen_driver)
1113 int ide_device_get(ide_drive_t
*);
1114 void ide_device_put(ide_drive_t
*);
1116 struct ide_ioctl_devset
{
1117 unsigned int get_ioctl
;
1118 unsigned int set_ioctl
;
1119 const struct ide_devset
*setting
;
1122 int ide_setting_ioctl(ide_drive_t
*, struct block_device
*, unsigned int,
1123 unsigned long, const struct ide_ioctl_devset
*);
1125 int generic_ide_ioctl(ide_drive_t
*, struct block_device
*, unsigned, unsigned long);
1127 extern int ide_vlb_clk
;
1128 extern int ide_pci_clk
;
1130 int ide_end_request(ide_drive_t
*, int, int);
1131 int ide_end_dequeued_request(ide_drive_t
*, struct request
*, int, int);
1132 void ide_kill_rq(ide_drive_t
*, struct request
*);
1134 void __ide_set_handler(ide_drive_t
*, ide_handler_t
*, unsigned int,
1136 void ide_set_handler(ide_drive_t
*, ide_handler_t
*, unsigned int,
1139 void ide_execute_command(ide_drive_t
*, u8
, ide_handler_t
*, unsigned int,
1142 void ide_execute_pkt_cmd(ide_drive_t
*);
1144 void ide_pad_transfer(ide_drive_t
*, int, int);
1146 ide_startstop_t
ide_error(ide_drive_t
*, const char *, u8
);
1148 void ide_fix_driveid(u16
*);
1150 extern void ide_fixstring(u8
*, const int, const int);
1152 int ide_busy_sleep(ide_hwif_t
*, unsigned long, int);
1154 int ide_wait_stat(ide_startstop_t
*, ide_drive_t
*, u8
, u8
, unsigned long);
1156 ide_startstop_t
ide_do_park_unpark(ide_drive_t
*, struct request
*);
1157 ide_startstop_t
ide_do_devset(ide_drive_t
*, struct request
*);
1159 extern ide_startstop_t
ide_do_reset (ide_drive_t
*);
1161 extern int ide_devset_execute(ide_drive_t
*drive
,
1162 const struct ide_devset
*setting
, int arg
);
1164 void ide_complete_task(ide_drive_t
*, ide_task_t
*, u8
, u8
);
1165 void ide_complete_rq(ide_drive_t
*, u8
);
1167 void ide_tf_dump(const char *, struct ide_taskfile
*);
1169 void ide_exec_command(ide_hwif_t
*, u8
);
1170 u8
ide_read_status(ide_hwif_t
*);
1171 u8
ide_read_altstatus(ide_hwif_t
*);
1173 void ide_set_irq(ide_hwif_t
*, int);
1175 void ide_tf_load(ide_drive_t
*, ide_task_t
*);
1176 void ide_tf_read(ide_drive_t
*, ide_task_t
*);
1178 void ide_input_data(ide_drive_t
*, struct request
*, void *, unsigned int);
1179 void ide_output_data(ide_drive_t
*, struct request
*, void *, unsigned int);
1181 int ide_io_buffers(ide_drive_t
*, struct ide_atapi_pc
*, unsigned int, int);
1183 extern void SELECT_DRIVE(ide_drive_t
*);
1184 void SELECT_MASK(ide_drive_t
*, int);
1186 u8
ide_read_error(ide_drive_t
*);
1187 void ide_read_bcount_and_ireason(ide_drive_t
*, u16
*, u8
*);
1189 int ide_check_atapi_device(ide_drive_t
*, const char *);
1191 void ide_init_pc(struct ide_atapi_pc
*);
1193 /* Disk head parking */
1194 extern wait_queue_head_t ide_park_wq
;
1195 ssize_t
ide_park_show(struct device
*dev
, struct device_attribute
*attr
,
1197 ssize_t
ide_park_store(struct device
*dev
, struct device_attribute
*attr
,
1198 const char *buf
, size_t len
);
1201 * Special requests for ide-tape block device strategy routine.
1203 * In order to service a character device command, we add special requests to
1204 * the tail of our block device request queue and wait for their completion.
1207 REQ_IDETAPE_PC1
= (1 << 0), /* packet command (first stage) */
1208 REQ_IDETAPE_PC2
= (1 << 1), /* packet command (second stage) */
1209 REQ_IDETAPE_READ
= (1 << 2),
1210 REQ_IDETAPE_WRITE
= (1 << 3),
1213 int ide_queue_pc_tail(ide_drive_t
*, struct gendisk
*, struct ide_atapi_pc
*);
1215 int ide_do_test_unit_ready(ide_drive_t
*, struct gendisk
*);
1216 int ide_do_start_stop(ide_drive_t
*, struct gendisk
*, int);
1217 int ide_set_media_lock(ide_drive_t
*, struct gendisk
*, int);
1218 void ide_create_request_sense_cmd(ide_drive_t
*, struct ide_atapi_pc
*);
1219 void ide_retry_pc(ide_drive_t
*, struct gendisk
*);
1221 int ide_cd_expiry(ide_drive_t
*);
1223 int ide_cd_get_xferlen(struct request
*);
1225 ide_startstop_t
ide_issue_pc(ide_drive_t
*);
1227 ide_startstop_t
do_rw_taskfile(ide_drive_t
*, ide_task_t
*);
1229 void task_end_request(ide_drive_t
*, struct request
*, u8
);
1231 int ide_raw_taskfile(ide_drive_t
*, ide_task_t
*, u8
*, u16
);
1232 int ide_no_data_taskfile(ide_drive_t
*, ide_task_t
*);
1234 int ide_taskfile_ioctl(ide_drive_t
*, unsigned int, unsigned long);
1236 int ide_dev_read_id(ide_drive_t
*, u8
, u16
*);
1238 extern int ide_driveid_update(ide_drive_t
*);
1239 extern int ide_config_drive_speed(ide_drive_t
*, u8
);
1240 extern u8
eighty_ninty_three (ide_drive_t
*);
1241 extern int taskfile_lib_get_identify(ide_drive_t
*drive
, u8
*);
1243 extern int ide_wait_not_busy(ide_hwif_t
*hwif
, unsigned long timeout
);
1245 extern void ide_stall_queue(ide_drive_t
*drive
, unsigned long timeout
);
1247 extern void ide_timer_expiry(unsigned long);
1248 extern irqreturn_t
ide_intr(int irq
, void *dev_id
);
1249 extern void do_ide_request(struct request_queue
*);
1251 void ide_init_disk(struct gendisk
*, ide_drive_t
*);
1253 #ifdef CONFIG_IDEPCI_PCIBUS_ORDER
1254 extern int __ide_pci_register_driver(struct pci_driver
*driver
, struct module
*owner
, const char *mod_name
);
1255 #define ide_pci_register_driver(d) __ide_pci_register_driver(d, THIS_MODULE, KBUILD_MODNAME)
1257 #define ide_pci_register_driver(d) pci_register_driver(d)
1260 static inline int ide_pci_is_in_compatibility_mode(struct pci_dev
*dev
)
1262 if ((dev
->class >> 8) == PCI_CLASS_STORAGE_IDE
&& (dev
->class & 5) != 5)
1267 void ide_pci_setup_ports(struct pci_dev
*, const struct ide_port_info
*,
1268 hw_regs_t
*, hw_regs_t
**);
1269 void ide_setup_pci_noise(struct pci_dev
*, const struct ide_port_info
*);
1271 #ifdef CONFIG_BLK_DEV_IDEDMA_PCI
1272 int ide_pci_set_master(struct pci_dev
*, const char *);
1273 unsigned long ide_pci_dma_base(ide_hwif_t
*, const struct ide_port_info
*);
1274 int ide_pci_check_simplex(ide_hwif_t
*, const struct ide_port_info
*);
1275 int ide_hwif_setup_dma(ide_hwif_t
*, const struct ide_port_info
*);
1277 static inline int ide_hwif_setup_dma(ide_hwif_t
*hwif
,
1278 const struct ide_port_info
*d
)
1284 struct ide_pci_enablebit
{
1285 u8 reg
; /* byte pci reg holding the enable-bit */
1286 u8 mask
; /* mask to isolate the enable-bit */
1287 u8 val
; /* value of masked reg when "enabled" */
1291 /* Uses ISA control ports not PCI ones. */
1292 IDE_HFLAG_ISA_PORTS
= (1 << 0),
1293 /* single port device */
1294 IDE_HFLAG_SINGLE
= (1 << 1),
1295 /* don't use legacy PIO blacklist */
1296 IDE_HFLAG_PIO_NO_BLACKLIST
= (1 << 2),
1297 /* set for the second port of QD65xx */
1298 IDE_HFLAG_QD_2ND_PORT
= (1 << 3),
1299 /* use PIO8/9 for prefetch off/on */
1300 IDE_HFLAG_ABUSE_PREFETCH
= (1 << 4),
1301 /* use PIO6/7 for fast-devsel off/on */
1302 IDE_HFLAG_ABUSE_FAST_DEVSEL
= (1 << 5),
1303 /* use 100-102 and 200-202 PIO values to set DMA modes */
1304 IDE_HFLAG_ABUSE_DMA_MODES
= (1 << 6),
1306 * keep DMA setting when programming PIO mode, may be used only
1307 * for hosts which have separate PIO and DMA timings (ie. PMAC)
1309 IDE_HFLAG_SET_PIO_MODE_KEEP_DMA
= (1 << 7),
1310 /* program host for the transfer mode after programming device */
1311 IDE_HFLAG_POST_SET_MODE
= (1 << 8),
1312 /* don't program host/device for the transfer mode ("smart" hosts) */
1313 IDE_HFLAG_NO_SET_MODE
= (1 << 9),
1314 /* trust BIOS for programming chipset/device for DMA */
1315 IDE_HFLAG_TRUST_BIOS_FOR_DMA
= (1 << 10),
1316 /* host is CS5510/CS5520 */
1317 IDE_HFLAG_CS5520
= (1 << 11),
1318 /* ATAPI DMA is unsupported */
1319 IDE_HFLAG_NO_ATAPI_DMA
= (1 << 12),
1320 /* set if host is a "non-bootable" controller */
1321 IDE_HFLAG_NON_BOOTABLE
= (1 << 13),
1322 /* host doesn't support DMA */
1323 IDE_HFLAG_NO_DMA
= (1 << 14),
1324 /* check if host is PCI IDE device before allowing DMA */
1325 IDE_HFLAG_NO_AUTODMA
= (1 << 15),
1326 /* host uses MMIO */
1327 IDE_HFLAG_MMIO
= (1 << 16),
1329 IDE_HFLAG_NO_LBA48
= (1 << 17),
1331 IDE_HFLAG_NO_LBA48_DMA
= (1 << 18),
1332 /* data FIFO is cleared by an error */
1333 IDE_HFLAG_ERROR_STOPS_FIFO
= (1 << 19),
1334 /* serialize ports */
1335 IDE_HFLAG_SERIALIZE
= (1 << 20),
1336 /* host is DTC2278 */
1337 IDE_HFLAG_DTC2278
= (1 << 21),
1338 /* 4 devices on a single set of I/O ports */
1339 IDE_HFLAG_4DRIVES
= (1 << 22),
1340 /* host is TRM290 */
1341 IDE_HFLAG_TRM290
= (1 << 23),
1342 /* use 32-bit I/O ops */
1343 IDE_HFLAG_IO_32BIT
= (1 << 24),
1345 IDE_HFLAG_UNMASK_IRQS
= (1 << 25),
1346 IDE_HFLAG_BROKEN_ALTSTATUS
= (1 << 26),
1347 /* serialize ports if DMA is possible (for sl82c105) */
1348 IDE_HFLAG_SERIALIZE_DMA
= (1 << 27),
1349 /* force host out of "simplex" mode */
1350 IDE_HFLAG_CLEAR_SIMPLEX
= (1 << 28),
1351 /* DSC overlap is unsupported */
1352 IDE_HFLAG_NO_DSC
= (1 << 29),
1353 /* never use 32-bit I/O ops */
1354 IDE_HFLAG_NO_IO_32BIT
= (1 << 30),
1355 /* never unmask IRQs */
1356 IDE_HFLAG_NO_UNMASK_IRQS
= (1 << 31),
1359 #ifdef CONFIG_BLK_DEV_OFFBOARD
1360 # define IDE_HFLAG_OFF_BOARD 0
1362 # define IDE_HFLAG_OFF_BOARD IDE_HFLAG_NON_BOOTABLE
1365 struct ide_port_info
{
1368 int (*init_chipset
)(struct pci_dev
*);
1370 void (*get_lock
)(irq_handler_t
, void *);
1371 void (*release_lock
)(void);
1373 void (*init_iops
)(ide_hwif_t
*);
1374 void (*init_hwif
)(ide_hwif_t
*);
1375 int (*init_dma
)(ide_hwif_t
*,
1376 const struct ide_port_info
*);
1378 const struct ide_tp_ops
*tp_ops
;
1379 const struct ide_port_ops
*port_ops
;
1380 const struct ide_dma_ops
*dma_ops
;
1382 struct ide_pci_enablebit enablebits
[2];
1384 hwif_chipset_t chipset
;
1386 u16 max_sectors
; /* if < than the default one */
1398 int ide_pci_init_one(struct pci_dev
*, const struct ide_port_info
*, void *);
1399 int ide_pci_init_two(struct pci_dev
*, struct pci_dev
*,
1400 const struct ide_port_info
*, void *);
1401 void ide_pci_remove(struct pci_dev
*);
1404 int ide_pci_suspend(struct pci_dev
*, pm_message_t
);
1405 int ide_pci_resume(struct pci_dev
*);
1407 #define ide_pci_suspend NULL
1408 #define ide_pci_resume NULL
1411 void ide_map_sg(ide_drive_t
*, struct request
*);
1412 void ide_init_sg_cmd(ide_drive_t
*, struct request
*);
1414 #define BAD_DMA_DRIVE 0
1415 #define GOOD_DMA_DRIVE 1
1417 struct drive_list_entry
{
1418 const char *id_model
;
1419 const char *id_firmware
;
1422 int ide_in_drive_list(u16
*, const struct drive_list_entry
*);
1424 #ifdef CONFIG_BLK_DEV_IDEDMA
1425 int ide_dma_good_drive(ide_drive_t
*);
1426 int __ide_dma_bad_drive(ide_drive_t
*);
1427 int ide_id_dma_bug(ide_drive_t
*);
1429 u8
ide_find_dma_mode(ide_drive_t
*, u8
);
1431 static inline u8
ide_max_dma_mode(ide_drive_t
*drive
)
1433 return ide_find_dma_mode(drive
, XFER_UDMA_6
);
1436 void ide_dma_off_quietly(ide_drive_t
*);
1437 void ide_dma_off(ide_drive_t
*);
1438 void ide_dma_on(ide_drive_t
*);
1439 int ide_set_dma(ide_drive_t
*);
1440 void ide_check_dma_crc(ide_drive_t
*);
1441 ide_startstop_t
ide_dma_intr(ide_drive_t
*);
1443 int ide_allocate_dma_engine(ide_hwif_t
*);
1444 void ide_release_dma_engine(ide_hwif_t
*);
1446 int ide_build_sglist(ide_drive_t
*, struct request
*);
1447 void ide_destroy_dmatable(ide_drive_t
*);
1449 #ifdef CONFIG_BLK_DEV_IDEDMA_SFF
1450 int config_drive_for_dma(ide_drive_t
*);
1451 extern int ide_build_dmatable(ide_drive_t
*, struct request
*);
1452 void ide_dma_host_set(ide_drive_t
*, int);
1453 extern int ide_dma_setup(ide_drive_t
*);
1454 void ide_dma_exec_cmd(ide_drive_t
*, u8
);
1455 extern void ide_dma_start(ide_drive_t
*);
1456 int ide_dma_end(ide_drive_t
*);
1457 int ide_dma_test_irq(ide_drive_t
*);
1458 u8
ide_dma_sff_read_status(ide_hwif_t
*);
1459 extern const struct ide_dma_ops sff_dma_ops
;
1461 static inline int config_drive_for_dma(ide_drive_t
*drive
) { return 0; }
1462 #endif /* CONFIG_BLK_DEV_IDEDMA_SFF */
1464 void ide_dma_lost_irq(ide_drive_t
*);
1465 void ide_dma_timeout(ide_drive_t
*);
1466 ide_startstop_t
ide_dma_timeout_retry(ide_drive_t
*, int);
1469 static inline int ide_id_dma_bug(ide_drive_t
*drive
) { return 0; }
1470 static inline u8
ide_find_dma_mode(ide_drive_t
*drive
, u8 speed
) { return 0; }
1471 static inline u8
ide_max_dma_mode(ide_drive_t
*drive
) { return 0; }
1472 static inline void ide_dma_off_quietly(ide_drive_t
*drive
) { ; }
1473 static inline void ide_dma_off(ide_drive_t
*drive
) { ; }
1474 static inline void ide_dma_on(ide_drive_t
*drive
) { ; }
1475 static inline void ide_dma_verbose(ide_drive_t
*drive
) { ; }
1476 static inline int ide_set_dma(ide_drive_t
*drive
) { return 1; }
1477 static inline void ide_check_dma_crc(ide_drive_t
*drive
) { ; }
1478 static inline ide_startstop_t
ide_dma_timeout_retry(ide_drive_t
*drive
, int error
) { return ide_stopped
; }
1479 static inline void ide_release_dma_engine(ide_hwif_t
*hwif
) { ; }
1480 #endif /* CONFIG_BLK_DEV_IDEDMA */
1482 #ifdef CONFIG_BLK_DEV_IDEACPI
1483 int ide_acpi_init(void);
1484 extern int ide_acpi_exec_tfs(ide_drive_t
*drive
);
1485 extern void ide_acpi_get_timing(ide_hwif_t
*hwif
);
1486 extern void ide_acpi_push_timing(ide_hwif_t
*hwif
);
1487 void ide_acpi_init_port(ide_hwif_t
*);
1488 void ide_acpi_port_init_devices(ide_hwif_t
*);
1489 extern void ide_acpi_set_state(ide_hwif_t
*hwif
, int on
);
1491 static inline int ide_acpi_init(void) { return 0; }
1492 static inline int ide_acpi_exec_tfs(ide_drive_t
*drive
) { return 0; }
1493 static inline void ide_acpi_get_timing(ide_hwif_t
*hwif
) { ; }
1494 static inline void ide_acpi_push_timing(ide_hwif_t
*hwif
) { ; }
1495 static inline void ide_acpi_init_port(ide_hwif_t
*hwif
) { ; }
1496 static inline void ide_acpi_port_init_devices(ide_hwif_t
*hwif
) { ; }
1497 static inline void ide_acpi_set_state(ide_hwif_t
*hwif
, int on
) {}
1500 void ide_register_region(struct gendisk
*);
1501 void ide_unregister_region(struct gendisk
*);
1503 void ide_undecoded_slave(ide_drive_t
*);
1505 void ide_port_apply_params(ide_hwif_t
*);
1506 int ide_sysfs_register_port(ide_hwif_t
*);
1508 struct ide_host
*ide_host_alloc(const struct ide_port_info
*, hw_regs_t
**);
1509 void ide_host_free(struct ide_host
*);
1510 int ide_host_register(struct ide_host
*, const struct ide_port_info
*,
1512 int ide_host_add(const struct ide_port_info
*, hw_regs_t
**,
1513 struct ide_host
**);
1514 void ide_host_remove(struct ide_host
*);
1515 int ide_legacy_device_add(const struct ide_port_info
*, unsigned long);
1516 void ide_port_unregister_devices(ide_hwif_t
*);
1517 void ide_port_scan(ide_hwif_t
*);
1519 static inline void *ide_get_hwifdata (ide_hwif_t
* hwif
)
1521 return hwif
->hwif_data
;
1524 static inline void ide_set_hwifdata (ide_hwif_t
* hwif
, void *data
)
1526 hwif
->hwif_data
= data
;
1529 extern void ide_toggle_bounce(ide_drive_t
*drive
, int on
);
1531 u64
ide_get_lba_addr(struct ide_taskfile
*, int);
1532 u8
ide_dump_status(ide_drive_t
*, const char *, u8
);
1537 u16 act8b
; /* t2 for 8-bit io */
1538 u16 rec8b
; /* t2i for 8-bit io */
1539 u16 cyc8b
; /* t0 for 8-bit io */
1540 u16 active
; /* t2 or tD */
1541 u16 recover
; /* t2i or tK */
1543 u16 udma
; /* t2CYCTYP/2 */
1547 IDE_TIMING_SETUP
= (1 << 0),
1548 IDE_TIMING_ACT8B
= (1 << 1),
1549 IDE_TIMING_REC8B
= (1 << 2),
1550 IDE_TIMING_CYC8B
= (1 << 3),
1551 IDE_TIMING_8BIT
= IDE_TIMING_ACT8B
| IDE_TIMING_REC8B
|
1553 IDE_TIMING_ACTIVE
= (1 << 4),
1554 IDE_TIMING_RECOVER
= (1 << 5),
1555 IDE_TIMING_CYCLE
= (1 << 6),
1556 IDE_TIMING_UDMA
= (1 << 7),
1557 IDE_TIMING_ALL
= IDE_TIMING_SETUP
| IDE_TIMING_8BIT
|
1558 IDE_TIMING_ACTIVE
| IDE_TIMING_RECOVER
|
1559 IDE_TIMING_CYCLE
| IDE_TIMING_UDMA
,
1562 struct ide_timing
*ide_timing_find_mode(u8
);
1563 u16
ide_pio_cycle_time(ide_drive_t
*, u8
);
1564 void ide_timing_merge(struct ide_timing
*, struct ide_timing
*,
1565 struct ide_timing
*, unsigned int);
1566 int ide_timing_compute(ide_drive_t
*, u8
, struct ide_timing
*, int, int);
1568 #ifdef CONFIG_IDE_XFER_MODE
1569 int ide_scan_pio_blacklist(char *);
1570 const char *ide_xfer_verbose(u8
);
1571 u8
ide_get_best_pio_mode(ide_drive_t
*, u8
, u8
);
1572 int ide_set_pio_mode(ide_drive_t
*, u8
);
1573 int ide_set_dma_mode(ide_drive_t
*, u8
);
1574 void ide_set_pio(ide_drive_t
*, u8
);
1575 int ide_set_xfer_rate(ide_drive_t
*, u8
);
1577 static inline void ide_set_pio(ide_drive_t
*drive
, u8 pio
) { ; }
1578 static inline int ide_set_xfer_rate(ide_drive_t
*drive
, u8 rate
) { return -1; }
1581 static inline void ide_set_max_pio(ide_drive_t
*drive
)
1583 ide_set_pio(drive
, 255);
1586 char *ide_media_string(ide_drive_t
*);
1588 extern struct device_attribute ide_dev_attrs
[];
1589 extern struct bus_type ide_bus_type
;
1590 extern struct class *ide_port_class
;
1592 static inline void ide_dump_identify(u8
*id
)
1594 print_hex_dump(KERN_INFO
, "", DUMP_PREFIX_NONE
, 16, 2, id
, 512, 0);
1597 static inline int hwif_to_node(ide_hwif_t
*hwif
)
1599 return hwif
->dev
? dev_to_node(hwif
->dev
) : -1;
1602 static inline ide_drive_t
*ide_get_pair_dev(ide_drive_t
*drive
)
1604 ide_drive_t
*peer
= drive
->hwif
->devices
[(drive
->dn
^ 1) & 1];
1606 return (peer
->dev_flags
& IDE_DFLAG_PRESENT
) ? peer
: NULL
;
1609 #define ide_port_for_each_dev(i, dev, port) \
1610 for ((i) = 0; ((dev) = (port)->devices[i]) || (i) < MAX_DRIVES; (i)++)
1612 #define ide_port_for_each_present_dev(i, dev, port) \
1613 for ((i) = 0; ((dev) = (port)->devices[i]) || (i) < MAX_DRIVES; (i)++) \
1614 if ((dev)->dev_flags & IDE_DFLAG_PRESENT)
1616 #define ide_host_for_each_port(i, port, host) \
1617 for ((i) = 0; ((port) = (host)->ports[i]) || (i) < MAX_HOST_PORTS; (i)++)